JP3836624B2 - handle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a handle attached to a bottle body.
[0002]
[Prior art]
In recent years, plastic bottles with grips with separate handles attached to plastic bottles such as polyester resin represented by polyethylene terephthalate, which is lighter and more impact resistant than glass, have been put to practical use. The handle mounting recess formed on the side surface of the bottle body has a grip and a grip provided with mounting arms projecting laterally from the upper and lower ends of the grip, and the end of the mounting arm is a wall in the grip mounting recess. A plastic bottle with a handle that is embedded and embedded in the market is distributed in the market.
[0003]
As shown in the side view partly cut away in FIG. 4, this plastic bottle with a handle has a separate handle 3 in advance, and the ends of its mounting arms 32 and 33 for blow molding in a blow molding mold. It is set so as to protrude into the mold, and the bottle body 1 is blow-molded in the blow-molding mold, and at the same time, the bottle walls 20 are integrated so that the ends of the mounting arms 32 and 33 are wrapped. It is manufactured. Further, projecting pieces 320 and 330 are formed outwardly at the end portions of the attachment arms 32 and 33, and the projecting pieces 320 and 330 are also embedded in the bottle wall 20 so as to prevent detachment.
[0004]
The bunch hand 3 for making plastic bottles with a handle in this manner, when it is transported to the mold for blow molding continuously to contact with side surfaces of the bunch hand as shown in Figure 2 for example transport It is necessary to separate the grips arranged on the rail 70, etc., colliding with each other, being conveyed while being pressed against each other, and arranged in front of the blow molding die with a screw or the like that gradually becomes wider from the tip. There was a problem that the blade 7 at the tip of the contacted part hit the grip part of the handle and could not be separated smoothly.
[0005]
The handle molded with the injection molding machine, since the ejection mechanism of the injection molding machine is the opposite side of the gate (typically movable mold) are deployed, the bunch hand a molded article stably on the opposite side movable type gate it is necessary to remain in, bunch hand there has been a problem that it is difficult performs the discharge process by easily eject pin exits from the movable mold.
[0006]
In addition, in the case of a handle having an H-shaped cross section in which an inner plate and an outer plate are connected by a central longitudinal rib for weight reduction, the inner side of the handle is also discharged when a plastic bottle with a handle formed by a blow molding machine is discharged. Since the gap between the plate and the outer plate is recessed and deep, it is necessary to take a large stroke of the eject pin that strikes the central vertical rib, and there is a problem that the discharge process is difficult to perform.
[0007]
[Problems to be solved by the invention]
It is an object of the present invention to provide a novel handle that solves the above problems.
[0008]
[Means for Solving the Problems]
The above object is achieved by the following means. That is, according to the present invention, in a handle comprising a grip portion and an attachment arm projecting laterally from the upper and lower portions of the grip portion , the grip portion has a transverse section H in which an inner plate and an outer plate are connected by a central vertical rib. And having a shape structure, a width around the central portion of the grip portion is set smaller than an upper and lower width of the grip portion, a gate mark for injection molding is provided on one side of the central vertical rib, and the central vertical rib Proposed is a handle having a reinforcing rib formed on the opposite side surface of the central longitudinal rib, the inner plate, and the outer plate and serving as an abutment portion of the eject pin at the time of injection molding. it is intended.
[0009]
The present invention has a grip provided with a grip portion and a mounting arm projecting laterally from the upper and lower portions of the grip portion, and the width of the central portion of the grip portion is set smaller than the vertical width of the grip portion. In the process of transporting the handle, there is a gap at the center of the grip portion of the adjacent handle when aligned so that the upper and lower sides of the handle are brought into contact with each other. when fed to the next step separately to one, it can be blade subscription Interview destination end of the disconnecting device performs disconnection reliably intrudes into the gap of the central portion.
[0010]
In the handle having an H-shaped cross section in which the inner plate and the outer plate are connected by a central vertical rib, an injection molding gate mark is provided on one side of the central vertical rib, and the central vertical rib is provided on the opposite side. The grip is characterized by having a reinforcing rib formed between the rib, the inner plate and the outer plate, so that one side of the central longitudinal rib is recessed between the inner plate and the outer plate. In addition, the injection molding gate trace is not conspicuous, and the central longitudinal rib has a reinforcing rib on the side opposite to the injection molding gate trace. The ribs become the resistance to pull out and remain stably on the opposite side of the gate, making it easy to discharge with the eject pin.
[0011]
This reinforcing rib is formed at a position corresponding to the eject pin on the opposite side of the gate, and is used as an abutment portion of the eject pin when it is integrated with the main body simultaneously with injection molding or blow molding. Since it is not necessary to correspond to the position deep between the inner plate and the outer plate of the handle, the stroke is small and it is easy to install.
[0012]
The reinforcing ribs, because it forms on the opposite side surfaces of the gate mark or around the injection molding, transparent even handle, effect this by diffuse reflection of the reinforcing ribs not easily prone whitening phenomenon is noticeable in the vicinity of the gate during injection molding There is.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the drawings. 1 (a) is a front view of a handle related to the present invention, FIG. 1 (b) is a side view of FIG. 1 (a), FIG. 1 (c) is a bottom view of FIG. 1 (b), and FIG. It is a side view which shows an example of the separation process of the handle after a process.
[0014]
As shown in FIG. 1, the handle of this example is a handle 3 having a grip portion 31 and mounting arms 32 and 33 projecting laterally from the upper and lower portions of the grip portion 31, and around the central portion of the grip portion 31. The width D of the grip is set to be smaller than the widths of the upper and lower widths D1 and D2 of the grip portion 31.
[0015]
In the process of transporting the handle 3 by setting the width D around the center of the grip portion 31 to be smaller than the upper and lower widths D1 and D2 of the grip portion 31 as described above, the upper and lower side surfaces of the handle 3 are A gap is formed around the center of adjacent grips 3 when they are arranged so as to be in contact with each other. Therefore, when this is separated one by one and sent to the next process, the width of the tip of the separation device as shown in FIG. 2 is narrow. blade 7 of subscription Interview is what can be performed disconnect reliably intrudes into the gap surrounding the central portion. As shown in FIG. 1, the handle according to the present embodiment forms a locking portion 4 protruding upward or in the width direction at the tip of the mounting arms 32 and 33 protruding in the lateral direction from the upper and lower portions of the grip portion 31. In the blow molding process, it is preferable that the locking portion 4 be wrapped with a bottle wall so as to be integrated, but the present invention is not limited to this.
[0016]
3 (a) is a front view of a bunch hand present invention, and FIG. 3 (b) is a side view of FIG. 3 (a), 3 (c) is a bottom view of FIG. 3 (b).
[0017]
Bunch hand of the invention in a grip 3 having a cross-section H-shaped structure linked by the inner plate 51 and outer plate 52 and the central vertical rib 53 as shown in FIG. 3, for injection molding on one side of said central longitudinal rib 53 It has a gate mark 8 and has a reinforcing rib 6 formed on the opposite side surface across the central longitudinal rib 53, the inner plate 51 and the outer plate 52.
[0018]
The reinforcing rib 6 is on the lower one side of the central vertical rib 53 opposite to the surface of the central vertical rib 53 on which the injection molding gate mark 8 is located, and at a position corresponding to the eject pin of the injection molding machine or blow molding machine. Provide.
[0019]
As shown in FIG. 3, the handle of this example includes a grip portion 31 and mounting arms 32 and 33 projecting laterally from the upper and lower portions of the grip portion 31, and further, tip portions of the mounting arms 32 and 33. Further, it is preferable that the engaging portion 4 protruding upward or in the width direction is formed, and in the blow molding process, the engaging portion 4 can be integrated by being wrapped by the bottle wall. However, it is not limited to this.
[0020]
Further, the grip portion 31 of the handle 3 has an H-shaped cross section in which the inner plate 51 and the outer plate 52 are connected by the central rib 53, and the inner plate 51 and the outer plate 52 have a structure as shown in FIG. If anti-slip uneven portions 9 are provided only on both side edges, the uneven portions 9 are formed only in the vicinity of both side edges in addition to the flexibility of the H-shaped structure itself, and the inner plate 51 and the outer plate 52, etc. It is preferable because it produces a subtle softness, and on the other hand, the majority of the central portion excluding the vicinity of both side edge portions is smoothly finished and exhibits the anti-slip effect by the concavo-convex portion 9 without impairing the overall feel.
[0021]
In the present invention, since the injection molding gate mark 8 is provided on one side surface of the central vertical rib 53 constituting the H-shaped cross section, one side of the central vertical rib 53 is located between the inner plate 51 and the outer plate 52. Since the injection molding gate trace 8 is extremely inconspicuous and has the reinforcing rib 6 on the opposite side of the central vertical rib 53 from the injection molding gate trace 8, At the time of die cutting, the reinforcing rib 6 becomes a punching resistance, and the grip 3 formed on the mold opposite to the gate remains stably, so that the discharging process by the eject pin is very easy to perform.
[0022]
And the reinforcing ribs 6 at a position corresponding to the opposite type of the ejection pin of the gate, the reinforcing rib 6 top as abutment 箇 plant eject pins when integrated with or blow molding during injection molding a bottle body 1 at the same time Since the surface is used , it is not necessary to make the eject pin correspond to the deep position between the inner plate 51 and the outer plate 52 of the handle, so that the stroke of the eject pin is short and easy to install.
[0023]
In the present invention, as shown in FIGS. 1 and 3, the inner plate 51 and the outer plate 52 are moved by the central vertical rib 53 to the vicinity of the tip surfaces of the upper and lower mounting arms 32 and 33 (positions 4 mm or less from the tip surface). It is preferable that a cross section perpendicular to the length direction which is a connected cross section is an H-shaped structure.
[0024]
This, in order to obtain a sufficient strength without taking H-shaped structure, if the minute, it is necessary to take a thickness larger take a thickness larger shrinkage in the cooling process at the time of injection molding a bunch hand This is because, in particular, a depression (also referred to as a sink) is likely to occur on the tip surface of the locking portion 4, and this sink is difficult to be generated and is not conspicuous when the H-shaped structure is used.
[0025]
Further, bunch to produce the hand 3 is composed of a movable mold fixed mold and, those using an injection mold (not shown) that can be divided from the part corresponding to the center of both types bunch hand 3 is normal although, a and the inner plate 51 grip portion 31 and lower portion attached arm 33 and the outer plate 52, the section perpendicular to the length direction is a transverse section joined by a central longitudinal rib 53 is H-shaped structure since undercut portion serving as a resistance to opening direction of the dividing direction and the handle 3 of the injection mold does not occur, there is an advantage that the step of taking out the handle 3 by dividing the dies is facilitated.
[0026]
The bottle body of the present invention uses a plastic, for example, a polyester resin typified by polyethylene terephthalate, to first form a tubular material (preform) as an intermediate product by injection molding, and then stretch the preform. In the case of polyethylene terephthalate, for example, in the case of polyethylene terephthalate, it is set in a blow mold while heated to 90 to 120 ° C., and high pressure air is blown into the preform to obtain biaxial stretch blow molding.
[0027]
In the present invention, a polyester resin represented by polyethylene terephthalate, polypropylene, polyethylene or the like can be used for the handle.
[0028]
In particular, when employing the same polyester resin and a bottle body as the material of the bunch hand, when the recycle is recovered can be treated with the body, also it is possible to use a recycled resin as a handle preferable.
[0029]
In order to attach the handle of the present invention to the bottle body, for example, a separate handle is set in advance in the blow molding mold so that the end of the mounting arm projects into the blow molding mold. In addition, it is preferable that the bottle body is blow molded in the blow molding mold, and at the same time, it is preferably manufactured by a method in which the end portion of the mounting arm is wrapped by the expanding bottle wall. It is not limited.
[0030]
【The invention's effect】
The present invention has a grip provided with a grip portion and a mounting arm projecting laterally from the upper and lower portions of the grip portion, and the width of the central portion of the grip portion is set smaller than the vertical width of the grip portion. In the process of transporting the handle, a gap is created in the center of adjacent handles when aligned so that the upper and lower sides of the handle are brought into contact with each other. In the case of feeding to the next process, the separating device enters the gap in the central portion and can be surely separated.
[0031]
In the handle having an H-shaped cross section in which the inner plate and the outer plate are connected by a central vertical rib, an injection molding gate mark is provided on one side of the central vertical rib, and the central vertical rib is provided on the opposite side. Since the grip has a reinforcing rib formed between the rib, the inner plate, and the outer plate, one side of the central longitudinal rib is a recessed position between the inner plate and the outer plate. In addition, the injection molding gate trace is not conspicuous, and the central longitudinal rib has a reinforcing rib on the side opposite to the injection molding gate trace. The ribs become the resistance to pull out and remain stably on the opposite side of the gate, making it easy to discharge with the eject pin.
[0032]
The reinforcing ribs, formed at a position corresponding to the eject pin opposite type of gate, when the injection molding and, since the abutting 箇 plant eject pins when simultaneously integrated with the main body and blow molding, ejection Since it is not necessary to make the pin correspond to the deep position between the inner plate and the outer plate of the handle, the stroke can be shortened and it is easy to install.
[0033]
Since this reinforcing rib is formed on the injection molding gate trace or on the opposite side of the periphery of the gate, the whitening phenomenon that is likely to occur near the gate during injection molding is not noticeable due to irregular reflection of the reinforcing rib even if it is a transparent handle. There is.
[Brief description of the drawings]
FIG. 1 (a) is a front view showing an example of a handle related to the present invention, FIG. 1 (b) is a side view of FIG. 1 (a), and FIG. 1 (c) is FIG. 1 (b). It is a bottom view.
FIG. 2 is a side view showing an example of a handle separating apparatus.
[3] FIG. 3 (a) is a front view showing an example of a bunch hand present invention, a side view of FIG. 3 (b) FIG. 3 (a), the bottom surface in FIG. 3 (c) 3 (b) FIG.
FIG. 4 is a side view in which a conventional plastic bottle with a handle is partially cut away.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bottle main body 3 Handle 4 Locking part 6 Reinforcement rib 7 Screw blade 8 Gate trace 9 Uneven part 31 Grip part 32 Upper attachment arm 33 Lower attachment arm 51 Inner plate 52 Outer plate 53 Central vertical rib

Claims (1)

In a handle comprising a grip portion and an attachment arm projecting laterally from the upper and lower portions of the grip portion , the grip portion has an H-shaped cross section in which an inner plate and an outer plate are connected by a central vertical rib. the grip width near the central portion is set smaller than the vertical width of the handle portion of, a gate mark for injection molding on one side of said central longitudinal rib, on the opposite side of said central longitudinal rib, A handle having a reinforcing rib formed over the central vertical rib, the inner plate, and the outer plate and serving as an abutting portion of an eject pin at the time of injection molding .

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